WorldView-2 Satellite Images

DigitalGlobe's WorldView-2 Satellite, launched October 8, 2009, provides 0.5m Panchromatic (B&W) mono and stereo satellite image data. To view original satellite images at 0.5m full resolution and read more on the satellite sensor go here http://www.satimagingcorp.com/gallery-worldview-2.html

With its improved agility, WorldView-2 is able to act like a paintbrush, sweeping back and forth to collect very large areas of multispectral imagery in a single pass. WorldView-2 alone is able to collect nearly 1 million km2 every day, doubling the collection capacity of our constellation to nearly 2 million km2 per day. And the combination of WorldView-2s increased agility and high altitude enables it to typically revisit any place on earth in 1.1 days. When added to the satellite constellation, revisit time drops below one day and never exceeds two days, providing the most same-day passes of any commercial high resolution constellation.

The WorldView-2 sensor provides a high resolution Panchromatic band and eight (8) Multispectral bands; four (4) standard colors (red, green, blue, and near-infrared 1) and four (4) new bands (coastal, yellow, red edge, and near-infrared 2), full-color images for enhanced spectral analysis, mapping and monitoring applications, land-use planning, disaster relief, exploration, defense and intelligence, and visualization and simulation environments.
WorldView-2 Spectral Bands

Coastal Band (400 - 450 nm): This band supports vegetation identification and analysis, and supports bathymetric studies based upon its chlorophyll and water penetration characteristics. Also, this band is subject to atmospheric scattering and will be used to investigate atmospheric correction techniques.

Yellow Band (585 - 625 nm): Used to identify "yellow-ness" characteristics of targets, important for vegetation applications. Also, this band assists in the development of "true-color" hue correction for human vision representation.

Red Edge Band (705 - 745 nm): Aids in the analysis of vegetative condition. Directly related to plant health revealed through chlorophyll production.

Near Infrared 2 Band (860 - 1040 nm): This band overlaps the NIR 1 band but is less affected by atmospheric influence. It supports vegetation analysis and biomass studies.

The WorldView-2 imaging payload is the second such system engineered and manufactured by ITT Space Systems Division for DigitalGlobe. Once deployed, it will operate at an altitude of 770 kilometers, and the advanced on-board imaging system will capture pan-sharpened, multispectral images (with better than 0.5-meter resolution) from almost 500 miles above the Earth. These images supply unprecedented detail and geospatial accuracy, further expanding the applications for satellite imagery in both commercial and government markets. Added spectral diversity provides the ability to perform precise change detection and mapping.

In addition to numerous other technical improvements, WorldView-2 also has the ability to accommodate direct tasking, which will allow select customers around the world to load imaging profiles directly up to the spacecraft and execute delivery of the data directly down to their own ground stations.

Category:

Science & Technology

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